Tonight i have decided to try Operator ( with ip address 192.168.10.249) in my office, i have a Kontrol as a firewall with ip address 192.168.10.254. Outoing call work perfect but incoming call are mute....

Do you have provide the external IP (public) to your SIP provider. Sometimes this could help.
I got also Control and this is my ruleset for operator.
Inbound:
Internet -> Firewall forward to IP(internal)
Services: SIP, RTP, TCP 5090, UDP 5065, UDP 5090, UDP 8000 and UDP 8002
Outbound:
Not set because it's already in Trusted (LAN) and has internet access.

I have changed my configurations with your ....but nothing is changed.....every incoming call is mute and I don't have any idea to solve this problem.
i can't localize the problem...i don't know if is it in Control or Operator.

Lack of audio is almost always a NAT/Network/IP issue. The ports on the firewall must be open. No audio on a connected call would mean that the RTP ports are probably not open. The proper outside ip address must be set in the SIP configuration on the server especially if the Operator machine is behind NAT. If it is not set the SIP packets will have an internal non-routable IP that your provider will not be able to reach listed in it.

I am a bit behind on using the most recent Operator build but the basics for getting VOIP to work won't have changed.

@VToncar
Vladimiet, I have help Jabba remote and can't find a reason why this problem is there. Voice outbound works perfect, but incoming is dead (mute). I have made a sniffer capture and he has send it to you by e-mail. Please, let me also know what the problem could be. Just to learn and for certification purpose

@Jabba
It was nice to work with you on distance (remotely)

@Little Mo
Jabba and I have looked in the Control and Operator setting but the problem wasn't Control. Settings are good.

I received no packet dump from you so far. But I looked into another dump today that showed an interesting issue: The INVITE request sent by the SIP provider contained information about the length of the SDP part but there was no SDP in the packet.

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